Car-truck.



H. M. PFLAGER..

GAR TRUCK.

APPLICATION min JULY 11. 19m.

2 SHEETS-SHEET lf noms Burns. mc .umm wnsmncmm n. c.

H. M. PFLAGER.

CAR TRUCK- y APPLICATION' f lLED 1uLY11,.x914. l47,430. Patented July 20, 1915.

2 SHEET'S-SHEET 2A mms mus. im uhm aanmeten. nA c lle yit known L'HAuvIY lilflrrinonu, a citizen of the llnitedl wSjtates. resid 0r atthe cityof St. LouisSJta-teo h ve invented a certainnearanv Y. l ment in Car-Truch et vwhich 'tha-.following isa full, clear, and exact description, such as will enableothers skilled.' ini-,the art l.to which it appertainsfftogmake anduse the same,rrelcrence being had toy tlieaccdmpany- 'ing drawings, formirgpart ofthis specilication, in whiclk l 'Y Figure I is partial top ,planjuiew of my improved car truck. illlig.;A Zeig af-sigle elevational View' partly in section. Fig. 3 is a sectional view on line 3-3 of Fig. l. Fig.

4 is sectional view on line ale-4 of Fig. 1.

the truck and the journal brasses were pivotally mounted in`the journal boxes, the side frames of the truck having pivotal relation to the under-frame of the car whereby they could swing horizontally and parallelism be maintained between the axles carrying the wheels.

In the construction of the patent just inentioned, the wheel axles of necessity lhad swinging motion relative to the journal boxeswith` the result that the dust guards, as ordinarily constructed, could not maintain the proper relation to the axles. In my present construction, the side .frames ef the truck are pivotally connected to the under- :lrame of thev car, or a part thereof, such as the body bolster and, vinstead of having the journal brasses pivotally mounted in the journal boxes, I'pivotally mount the journal boxes in thetruck side .trames and .am thus enabled to maintain parallelism of the wheel axles without disturbing1 the relation between the dust guards and t e axles.

In the drawings i indicates the truck side frame, preferably made of a casting, having spring seats lfor the supporting springs 9, whose upper ends coperate with a spring bearing plate 3, having a concentric bearing member coperating with a converselyshaped bearing member on the body bolster GAR-TRUCK.

specification of Letters Patent.

HABE/fl M'FL'ER 9F. Sr. Louis', ivrISSOUiir.

Patented auiy'ao, 1915.

Y7, 1914..; sensi Nn. 851,489.

4. I The casting 1 and bearing member 3 are constructed in a .manner-f that permits oi their vertical 'movement without, at the same time, enabling either of the parts to rotate 'relative 'to-each* other. A king-'bolt 5 passes througluthe'parts and acts as a swiveling pin on-=whiclrftlie side frames of the truck may turn relative to the end frame of thecar. ,jf-

- Each side frame-isfprovided withan opening iny registration'with the king bolt 5 whereby a. cross connecting member 6 extends rom side frame to side frame and may Abe connected and thereby add to the rigidity of the structure. Eafh side frame is further provided with pedestal jaws 7 which the journal boxes of the truck are mounted.; but instead of mounting these journal. boxes rigidly in the truck side iframes, said journal boxes are provided with bearings on their upper faces, see Fig. el, which bearings coperate with vthe concen tric bearings on the under side vfaces of the truck side frames between the pedestal jaws.

Each truck side frame is recessed so as to receive a boss 7a on the journal box, which boss is slotted to receive the bolt 8 which extends up through the truckside frame and serves to hold the journal box against vertical displacement between the pedestal jaws. This bolt 8 may have the nut and Cotter pin at itsl upper end, asis usual in constructions of this kind. The pedestal jaws 7, or rather the inner aces'oi the truck frame casting with which lthe j ournal box cdperates,

are preferably beveled, as shown in Fig. 5,

in operative position.

l. In car construction, an underframe,

.truck side trames each pivotally connected thereto, said truck frames having two .or more journal boxes pivotally yconnected thereto, and axles mounted in said journal boxes and movable na horizontal direction therewith, said axles carrying wheels..

2. In car construction, an truck side frames each having pivotal relation to said under-frame, ljournal boxes pivotally mounted with respect'to said truck side frames, axles mounted in said journal boxes and having a horizontal swinging motion therewith whereby horizontal relation between said axles -and journal boxes is maintained at all times, and' wheels on said axles.

3. In car construction, the combination of a truck side frame having pivotal relation to the underframe of the car, said truck side frame having pedestal jaws whosinner faces are inclined in opposite directions thereby providing vertically disposed apex bearing points, and journal boxes having bearing' faces on their upper walls coperating with the converse bearing faces on the truck side,v frame, said journal boxes also having means for receiving a swivel bolt, and a swivel bolt for connecting said journal boxes to said truck side frame.

i. In car construction, an underframe, wheels, axles on which said wheels are mounted, journal boxes on the ends of the underframe,

axles, and truck side frames each pivotally connected to said underframe and each being pivotally supported by a pair of journal 'boxes through the medium of fixedly located pivots, whereby-said truck vside frames mayeach swing horizontally and independently upon the supports furnished by said journal boxes'.

5. In car construction, axles, wheelsl arranged thereon, journal boxes on the ends of the axles, truck side frames pivotally supported at their ends by said journal boxes soas to have a horizontal swinging movement independently of said journal boxes,

and each of said truck side frames being in...V

dependently and pivotally connected to the underframe of the car at about the central portionv thereof.

In testimony whereof I hereunto affix my signature in the presence of two witnesses, this 15th day of July, 1914.

HARRY M. armena. lVitnesses M. P. SMITH,

M. A. HANDEL. 

